The Oxybar-1 oxygen concentrator is used to replenish oxygen deficiency in the body, as well as to improve overall well-being and tone. Irritability, drowsiness, decreased performance, insomnia and other manifestations of hypoxia torment most residents of large cities, Oxybar-1 is a great way to get rid of them. Attention! This model is NOT medical equipment and is NOT intended for medical procedures related to maintaining human life